Quote:
Originally Posted by jarjar
Yes, ideally all codes will be cleared eventually...I have the LEDs for the cluster just need to find time to solder them in
The car is a 2001 2.7 986
No other fault codes except airbag passenger side and AC codes and a seat buckle
I verified that the DME and fuel pump relays both work.
Jumpered the fuel pump relay socket and could hear the fuel pump...cant hear the pump with the relay in
Measured the voltage at the fuel pump relay socket and is only around 8V with the ignition turned on....should be 12V I believe to actuate the relay
Fuel pump fuse is good...measures 12.5 V on bottom side and OV on top side when fuse removed
I agree there is likely a ground issue somewhere...just have to find it...open to suggestions
cheers
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How old is your battery?
What voltage does it show?
Fuel pump relay
pole 30 is power from the fuse at C4 key on. this power source actuates the relay.
pole 86 is constant "battery" voltage KEY ON OR OFF in or out so it should show 12+ volts if your battery is good
pole 85 is ground at the ECU always shows ground
Pole 87 power to the fuel pump when relay contacts close
Any work done before the issue started?
like in the last say six months?
There is a list of ground points in the Bentley book
The power from pole 30 which comes from the C4 is what actuates the relay.
If you need to know that voltage I can test mine and let you know.
I don't think a relay needs 12 volts to close the contacts but I could be wrong.
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